Researchers may obtain any of the following vital records by visiting the Louisiana State Archives Research Library or may request the records by mail. The Archives maintains the following:

Orleans Parish birth records for 1819-1907 (births over 100 years ago)*
(Index for 1790-1818, but no records)
Orleans Parish marriage records for 1870-1957 (marriages over 50 years ago)**
(Index for 1831-1869, but no records.)
Orleans Parish death records for 1819-1957 (deaths over 50 years ago)*
(Index for 1804-1818)
Statewide death records for 1911-1957 (deaths over 50 years ago)*
They also have passenger manifests for the Port of New Orleans, military service records, Confederate Pension Applications, and records from the State Land Office to name a few.

Be sure to read the fee schedule.